Home / 686,885.58-1,030,069.55-287,553.96

Finding the Fourth Proportional to 686,885.58, 1,030,069.55 and 287,553.96

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Solution

The fourth proportional to 686,885.58, 1,030,069.55 and 287,553.96 is: 431,222.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,885.58 : 1,030,069.55 = 287,553.96 : x
  2. Step 2: Convert to fraction form
    686,885.58/1,030,069.55 = 287,553.96/x
  3. Step 3: Cross multiply
    686,885.58x = 1,030,069.55 × 287,553.96
  4. Step 4: Simplify right side
    686,885.58x = 296,200,578,177.92
  5. Step 5: Solve for x
    x = 296,200,578,177.92/686,885.58
  6. Step 6: Final answer
    x = 431,222.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.